LibC: Save callee saved registers on setjmp

userspace/libraries/LibC/arch/i686/setjmp.S

@@ -1,3 +1,5 @@
+// jmp_buf: esp, eip, ebx, ebp, edi, esi
+
 // int setjmp(jmp_buf env)
 .global setjmp
 setjmp:
@@ -9,6 +11,11 @@ setjmp:
 	movl (%esp), %eax
 	movl %eax, 4(%edx)
 
+	movl %ebx,  8(%edx)
+	movl %ebp, 12(%edx)
+	movl %edi, 16(%edx)
+	movl %esi, 20(%edx)
+
 	xorl %eax, %eax
 
 	ret
@@ -25,8 +32,12 @@ longjmp:
 	testl %ecx, %ecx
 	cmovnzl %ecx, %eax
 
-	movl 0(%edx), %esp
-	movl 4(%edx), %ecx
+	movl  0(%edx), %esp
+	movl  4(%edx), %ecx
+	movl  8(%edx), %ebx
+	movl 12(%edx), %ebp
+	movl 16(%edx), %edi
+	movl 20(%edx), %esi
 	jmp *%ecx
 
  .size longjmp, . - longjmp

userspace/libraries/LibC/arch/x86_64/setjmp.S

@@ -1,3 +1,5 @@
+// jmp_buf: rsp, rip, rbx, rbp, r12-r15
+
 // int setjmp(jmp_buf env)
 .global setjmp
 setjmp:
@@ -7,6 +9,13 @@ setjmp:
 	movq (%rsp), %rax
 	movq %rax, 8(%rdi)
 
+	movq %rbx, 16(%rdi)
+	movq %rbp, 24(%rdi)
+	movq %r12, 32(%rdi)
+	movq %r13, 40(%rdi)
+	movq %r14, 48(%rdi)
+	movq %r15, 56(%rdi)
+
 	xorq %rax, %rax
 
 	ret
@@ -19,7 +28,13 @@ longjmp:
 	testq %rsi, %rsi
 	cmovnzq %rsi, %rax
 
-	movq 0(%rdi), %rsp
-	movq 8(%rdi), %rcx
+	movq  0(%rdi), %rsp
+	movq  8(%rdi), %rcx
+	movq 16(%rdi), %rbx
+	movq 24(%rdi), %rbp
+	movq 32(%rdi), %r12
+	movq 40(%rdi), %r13
+	movq 48(%rdi), %r14
+	movq 56(%rdi), %r15
 	jmp *%rcx
  .size longjmp, . - longjmp